Over saturation of omega 6 fats in the body create a highly inflammatory state in the body.
Oxidized oil Is very bad for people.
https://spacedoc.com/articles/why-butter-is-healthier-than-margarine
pufa: poly unsaturated fatty acid
https://chriskresser.com/how-industrial-seed-oils-are-making-us-sick/
This Study Below is “this idea” in an extreme short term every day occurrence sort of way.
Williams M, Sutherland W, McCormick M, et al. Impaired endothelial function following a meal rich in used cooking fat. J Am Coll Cardiol. 1999 Mar, 33 (4) 1050–1055.https://doi.org/10.1016/S0735-1097(98)00681-0